Develop Reference

Android PDF scrollview single continuous page

In xcode I can display a PDF as a single continuous page, with the PDF width being equal to screen width and then the vertical scroll being the height of PDF for said width. No problems
Currently converting same app to Android and having some difficulty implementing same PDF view
Basically I have a PDF page that is very long (single page). I don't want to swipe between pages, but instead like in my iOS app, have the PDF document fill the Android screen width wise, and then scroll vertically to show rest of PDF
I'm using com.github.barteksc.pdfviewer.PDFView to render my PDF
In my xml for the activity I have:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
tools:context=".ProfileActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.github.barteksc.pdfviewer.PDFView
android:id="#+id/pdfView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</ScrollView>
I've tried changing the layout_height to "wrap_content" for scrollView, Linear and pdf, as that would seem appropriate, but whenever I do this I get a blank screen. It seems that doing so resulting in no height attribute so the view collapses completely
I get:
What I want:
Would really appreciate any further help, this is really my only sticking point. I wish android had PDFKit (similar) as I found that quite easy to use and implement

Well there is an answer!
I had to 'upgrade' to the latest version: 3.1.0-beta.1 and use the:
.pageFitPolicy(FitPolicy.WIDTH)
Combined with my XML:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
tools:context=".AboutActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical">
<com.github.barteksc.pdfviewer.PDFView
android:id="#+id/pdfView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
</ScrollView>
Worked perfectly. I hope this helps others

OSMdroid how to add watermark

I'm creating an free Android application and I'm using OpenStreetMap (OSMdroid library). I have a question. On the webpage: https://www.openstreetmap.org/copyright
I have read, that I should put a text in the corner of map activity (#OpenStreetMap contributors).
How to do this?
I'd like my app to be comply with the OSM license.
Regards

There is a built in copyright overlay for displaying the notice based on the current tile source.
Edit, sample code is below
//Copyright overlay
mCopyrightOverlay = new CopyrightOverlay(context);
mMapView.getOverlays().add(this.mCopyrightOverlay);
Basically, whatever the current tile source is, the text overlay will be drawn.

When you have your layout file simply add a TextView with "#OpenStreetMap contributors" to it. (I recommend to use a RelativeLayout)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<org.osmdroid.views.MapView android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:text="OpenStreetMap Contributors" />
</RelativeLayout>
I saw in other apps that on startup they all show this and a few seconds later it is fading out so you can use a delayed animation for that.
textView.animate().setStartDelay(3000).alpha(0).setDuration(1000).start();

Set bitmap to an image src

im trying to set a bitmap to image something like:
android:src="img"
but only from code , and i get the img from the server.
but when im doing the setImageBitmap() method
it displays it like its in the background,like i would do this:
android:background="img"
so whatever isnt the image in the imageview becomes black and i dont want black background, this is the bad image i get:
Bad Image
and the image i want to get is:
Good Image
how can i set the image from bitmap in my code to be like src in xml ?
ty alot!
here is my xml:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary">
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_marginTop="#dimen/activity_vertical_margin"
android:layout_marginBottom="#dimen/activity_vertical_margin"
android:id="#+id/profile_image"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:layout_centerHorizontal="true"
app:civ_border_width="5dp"
app:civ_border_color="#c5eaf8"
android:elevation="10dp"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:layout_centerInParent="true"/>
<ProgressBar
android:id="#+id/progress_bar_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_centerInParent="true"
android:visibility="gone"/>
</RelativeLayout>
my bitmap is working good with all the images except images like this one its filling their background with black..

The problem is that you're setting a transparent image and the background is filled black.
Check this answer to a similar question: https://stackoverflow.com/a/20402227/1281775
Another way is to create another ImageView below the current one with a desired background color.

The black portion you view in your image is transparent. Either change your image to non-transparent background or change the background color.
imageView.setBackgroundColor(color);
imageView.setImageBitmap(bitmap);

Android: Adding Image to Master Detail Flow, scrolling text

I'm working on a information orientated app using the master/detail flow and so far, so good. I would like to add images to the TextView, but it's formatted differently then what I've experienced in the past and I'm lost. from my understanding of what I've read while searching is that the scrolling text is "newer" when generating the Master/detail activity, therefore I haven't found any information on this specific issue. I would also like to pass the images in using the content activity, so it would be-
addItem(new Item(ID,Name,Detail,Image1,Image2));
what the detail XML file looks like
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/bobblehead_detail"
style="?android:attr/textAppearanceMedium"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:textIsSelectable="true"
tools:context="com.example.johnson.fallout4bobbleheadlocations.BobbleheadDetailFragment" />
I tried adding ImageView's under it, but I received errors.
tl;dr I would like to add 2 images under the scrolling TextView.

I am not sure if I clearly understand what you mean but looking at your xml it seems to me that you need to add a layout (either relative or linear) to your xml file and then add a textview and two imageviews (or whatever you want) into that layout.
Something like this:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp" tools:context="com.example.somefragment">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/some_id2"
android:text="Here is your text"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/some_id"
android:src="#drawable/image1"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/some_id3"
android:src="#drawable/image2"/>
</RelativeLayout>

Can't get imageview to sit flush with the top of the screen

I'm trying to place an image view at the top of the screen, but it has some type of margin above and below it. So I tried adjustViewBounds = true, and it worked but then it wouldn't reach the sides of the screen. I just want it to be flush with the top of the screen, and reach the sides. Any suggestions?
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
tools:context="${packageName}.${activityClass}"
android:orientation="vertical" >
<ImageView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="#drawable/title_bar"/>
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="200dp" >
<LinearLayout
android:id="#+id/goals"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="#android:color/black" >
</RelativeLayout>

If it is just colored title bar - then it is make sense to use just View for example and set background property to needed color. If You have custom image for that and can not adjust it with default ImageView properties - then You can make 9Patch from your image and use it as a background also (in 9patch you decide by yourself how to scratch image and where to place content). You can find 9patch tool in android SDK. More info about 9patch:
http://developer.android.com/reference/android/graphics/NinePatch.html

I had this same problem. What I ended up doing was using a negative margin on the top of the ImageView like so:
android:layout_marginTop="-4dp"
You may have to play around to find the optimal number of dp for you. Hope this helps.